Incase anyone else wants to know....
Here's how to estimate a one-ounce portion of the following nuts and seeds:
24 Almonds
18 Cashews
20 Filberts (Hazelnuts)
10-12 medium macadamias
28 shelled peanuts
20 pecan halves
157 pine nuts (pignoli)
47 pistachios
14 walnut halves
1 tablespoon pumpkin seeds
1 medium-size handful sesame seeds
3 tablespoons of shelled sunflower seeds